#include <stdio.h>
#include "cmdlib.h"
#include "mathlib.h"
#include "trilib.h"
#include "l3dslib.h"
Include dependency graph for l3dslib.c:
Go to the source code of this file.
Data Structures | |
| struct | tri |
Defines | |
| #define | BLOCK_SIZE 4096 |
| #define | EDIT3DS 0x3D3D |
| #define | EDIT_OBJECT 0x4000 |
| #define | MAIN3DS 0x4D4D |
| #define | MAXVERTS 2000 |
| #define | OBJ_TRIMESH 0x4100 |
| #define | TRI_FACEL1 0x4120 |
| #define | TRI_VERTEXL 0x4110 |
Functions | |
| void | Load3DSTriangleList (char *filename, triangle_t **pptri, int *numtriangles) |
| int | ParseChunk (FILE *input) |
| int | ParseFaceL1 (FILE *input) |
| int | ParseVertexL (FILE *input) |
| void | StoreAliasTriangles (void) |
Variables | |
| int | bytesread |
| float | fverts [MAXVERTS][3] |
| int | level |
| int | numtris |
| triangle_t * | ptri |
| int | totaltris |
| tri | tris [MAXTRIANGLES] |
| int | trisfound |
| int | vertsfound |
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Referenced by SelectSplitPlaneNum(). |
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Definition at line 33 of file l3dslib.c. Referenced by ParseChunk(). |
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Definition at line 34 of file l3dslib.c. Referenced by ParseChunk(). |
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Definition at line 32 of file l3dslib.c. Referenced by ParseChunk(). |
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Definition at line 35 of file l3dslib.c. Referenced by ParseChunk(). |
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Definition at line 37 of file l3dslib.c. Referenced by ParseChunk(). |
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Definition at line 36 of file l3dslib.c. Referenced by ParseChunk(). |
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Definition at line 256 of file l3dslib.c. References bytesread, Error(), exit(), fclose(), fopen(), fprintf(), fread(), fseek(), input, level, malloc(), numtris, ParseChunk(), ptri, SEEK_SET, stderr, totaltris, trisfound, and vertsfound. 00257 {
00258 FILE *input;
00259 short int tshort;
00260
00261 bytesread = 0;
00262 level = 0;
00263 numtris = 0;
00264 totaltris = 0;
00265 vertsfound = 0;
00266 trisfound = 0;
00267
00268 if ((input = fopen(filename, "rb")) == 0) {
00269 fprintf(stderr,"reader: could not open file '%s'\n", filename);
00270 exit(0);
00271 }
00272
00273 fread(&tshort, sizeof(tshort), 1, input);
00274
00275 // should only be MAIN3DS, but some files seem to start with EDIT3DS, with
00276 // no MAIN3DS
00277 if ((tshort != MAIN3DS) && (tshort != EDIT3DS)) {
00278 fprintf(stderr,"File is not a 3DS file.\n");
00279 exit(0);
00280 }
00281
00282 // back to top of file so we can parse the first chunk descriptor
00283 fseek(input, 0, SEEK_SET);
00284
00285 ptri = malloc (MAXTRIANGLES * sizeof(triangle_t));
00286
00287 *pptri = ptri;
00288
00289 // parse through looking for the relevant chunk tree (MAIN3DS | EDIT3DS | EDIT_OBJECT |
00290 // OBJ_TRIMESH | {TRI_VERTEXL, TRI_FACEL1}) and skipping other chunks
00291 ParseChunk (input);
00292
00293 if (vertsfound || trisfound)
00294 Error ("Incomplete triangle set");
00295
00296 *numtriangles = totaltris;
00297
00298 fclose (input);
00299 }
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Definition at line 164 of file l3dslib.c. References bytesread, Done, EDIT3DS, EDIT_OBJECT, Error(), feof, fread(), i, input, length(), level, MAIN3DS, OBJ_TRIMESH, ParseFaceL1(), ParseVertexL(), t, TRI_FACEL1, TRI_VERTEXL, type, and w. Referenced by Load3DSTriangleList(). 00165 {
00166 #define BLOCK_SIZE 4096
00167 char temp[BLOCK_SIZE];
00168 unsigned short type;
00169 int i, length, w, t, retval;
00170
00171 level++;
00172 retval = 0;
00173
00174 // chunk type
00175 if (feof(input))
00176 Error ("Error: unexpected end of file");
00177
00178 fread(&type, sizeof(type), 1, input);
00179 bytesread += sizeof(type);
00180
00181 // chunk length
00182 if (feof(input))
00183 Error ("Error: unexpected end of file");
00184
00185 fread (&length, sizeof(length), 1, input);
00186 bytesread += sizeof(length);
00187 w = length - 6;
00188
00189 // process chunk if we care about it, otherwise skip it
00190 switch (type)
00191 {
00192 case TRI_VERTEXL:
00193 w -= ParseVertexL (input);
00194 goto ParseSubchunk;
00195
00196 case TRI_FACEL1:
00197 w -= ParseFaceL1 (input);
00198 goto ParseSubchunk;
00199
00200 case EDIT_OBJECT:
00201 // read the name
00202 i = 0;
00203
00204 do
00205 {
00206 if (feof(input))
00207 Error ("Error: unexpected end of file");
00208
00209 fread (&temp[i], 1, 1, input);
00210 i++;
00211 w--;
00212 bytesread++;
00213 } while (temp[i-1]);
00214
00215 case MAIN3DS:
00216 case OBJ_TRIMESH:
00217 case EDIT3DS:
00218 // parse through subchunks
00219 ParseSubchunk:
00220 while (w > 0)
00221 {
00222 w -= ParseChunk (input);
00223 }
00224
00225 retval = length;
00226 goto Done;
00227
00228 default:
00229 // skip other chunks
00230 while (w > 0)
00231 {
00232 t = w;
00233
00234 if (t > BLOCK_SIZE)
00235 t = BLOCK_SIZE;
00236
00237 if (feof(input))
00238 Error ("Error: unexpected end of file");
00239
00240 fread (&temp, t, 1, input);
00241 bytesread += t;
00242
00243 w -= t;
00244 }
00245
00246 retval = length;
00247 goto Done;
00248 }
00249
00250 Done:
00251 level--;
00252 return retval;
00253 }
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Definition at line 122 of file l3dslib.c. References bytesread, Error(), feof, fread(), i, input, j, numtris, StoreAliasTriangles(), tris, trisfound, tri::v, and vertsfound. Referenced by ParseChunk(). 00123 {
00124
00125 int i, j, startbytesread;
00126 unsigned short tshort;
00127
00128 if (trisfound)
00129 Error ("Error: Multiple face chunks");
00130
00131 trisfound = 1;
00132 startbytesread = bytesread;
00133
00134 if (feof(input))
00135 Error ("Error: unexpected end of file");
00136
00137 fread(&tshort, sizeof(tshort), 1, input);
00138 bytesread += sizeof(tshort);
00139 numtris = (int)tshort;
00140
00141 if (numtris > MAXTRIANGLES)
00142 Error ("Error: Too many triangles");
00143
00144 for (i=0 ; i<numtris ; i++)
00145 {
00146 for (j=0 ; j<4 ; j++)
00147 {
00148 if (feof(input))
00149 Error ("Error: unexpected end of file");
00150
00151 fread(&tshort, sizeof(tshort), 1, input);
00152 bytesread += sizeof(tshort);
00153 tris[i].v[j] = (int)tshort;
00154 }
00155 }
00156
00157 if (vertsfound && trisfound)
00158 StoreAliasTriangles ();
00159
00160 return bytesread - startbytesread;
00161 }
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Definition at line 82 of file l3dslib.c. References bytesread, Error(), feof, fread(), fverts, i, input, j, StoreAliasTriangles(), and vertsfound. Referenced by ParseChunk(). 00083 {
00084 int i, j, startbytesread, numverts;
00085 unsigned short tshort;
00086
00087 if (vertsfound)
00088 Error ("Error: Multiple vertex chunks");
00089
00090 vertsfound = 1;
00091 startbytesread = bytesread;
00092
00093 if (feof(input))
00094 Error ("Error: unexpected end of file");
00095
00096 fread(&tshort, sizeof(tshort), 1, input);
00097 bytesread += sizeof(tshort);
00098 numverts = (int)tshort;
00099
00100 if (numverts > MAXVERTS)
00101 Error ("Error: Too many vertices");
00102
00103 for (i=0 ; i<numverts ; i++)
00104 {
00105 for (j=0 ; j<3 ; j++)
00106 {
00107 if (feof(input))
00108 Error ("Error: unexpected end of file");
00109
00110 fread(&fverts[i][j], sizeof(float), 1, input);
00111 bytesread += sizeof(float);
00112 }
00113 }
00114
00115 if (vertsfound && trisfound)
00116 StoreAliasTriangles ();
00117
00118 return bytesread - startbytesread;
00119 }
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Definition at line 57 of file l3dslib.c. References Error(), fverts, i, j, k, numtris, ptri, totaltris, tris, trisfound, tri::v, triangle_t::verts, and vertsfound. Referenced by ParseFaceL1(), and ParseVertexL(). 00058 {
00059 int i, j, k;
00060
00061 if ((totaltris + numtris) > MAXTRIANGLES)
00062 Error ("Error: Too many triangles");
00063
00064 for (i=0; i<numtris ; i++)
00065 {
00066 for (j=0 ; j<3 ; j++)
00067 {
00068 for (k=0 ; k<3 ; k++)
00069 {
00070 ptri[i+totaltris].verts[j][k] = fverts[tris[i].v[j]][k];
00071 }
00072 }
00073 }
00074
00075 totaltris += numtris;
00076 numtris = 0;
00077 vertsfound = 0;
00078 trisfound = 0;
00079 }
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Definition at line 48 of file l3dslib.c. Referenced by Load3DSTriangleList(), ParseChunk(), ParseFaceL1(), and ParseVertexL(). |
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Definition at line 45 of file l3dslib.c. Referenced by ParseVertexL(), and StoreAliasTriangles(). |
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Definition at line 48 of file l3dslib.c. Referenced by Load3DSTriangleList(), ParseFaceL1(), and StoreAliasTriangles(). |
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Definition at line 51 of file l3dslib.c. Referenced by Load3DSTriangleList(), ReadPolysetGeometry(), StoreAliasTriangles(), and TRI_LoadPolysets(). |
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Definition at line 48 of file l3dslib.c. Referenced by Load3DSTriangleList(), and StoreAliasTriangles(). |
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Definition at line 46 of file l3dslib.c. Referenced by ParseFaceL1(), and StoreAliasTriangles(). |
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Definition at line 49 of file l3dslib.c. Referenced by Load3DSTriangleList(), ParseFaceL1(), and StoreAliasTriangles(). |
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Definition at line 49 of file l3dslib.c. Referenced by Load3DSTriangleList(), ParseFaceL1(), ParseVertexL(), and StoreAliasTriangles(). |
1.3.9.1